Apache Hadoop offers strong support for authentication and coarse
grained authorization - but this is not necessarily enough to meet the
demands of enterprise applications and compliance requirements.
Providing fine-grained access to data will enable organizations to store
more sensitive information in Hadoop; only those users with the
appropriate privileges will ever see that sensitive data.

Cloudera and Oracle are taking the lead on Sentry - a new open source
authorization module that integrates with Hadoop-based SQL query
engines. Key developers for the project will provide details on its implementation, including: